The Borderlands 2: Add-On Content Pack bundles together all of the previously released DLC for Gearbox Software's return to the wild frontier of the planet Pandora. Players can try out two add-on campaigns (Captain Scarlett and Her Pirate's Booty, and Mr. Torgue's Campaign of Carnage), head to the Creature Slaughter Dome battle arena, and gain access to the Gearbox Gun Pack, the Skyrocket Grenade, and the fifth character, Gaige the Mechromancer.